We're dividing 907915 by 57 
The aim is to understand the frequency of 57 in 907915.

Step 1:
9 divided by 57 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 57

On to step 2:
The number 57 fits into 90 1 times, leaving a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 57 from 90 and we're left with 33.
Append the next digit (7) from the dividend to 33 and continue with: 337 / 57

Going ahead to step 3:
When dividing 337 by 57, we get 5 with a remainder of 52.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we subtract 285 from 337, we get 52.
Append the next digit (9) from the dividend to 52 and continue with: 529 / 57

Step 4:
The number 57 fits into 529 9 times, leaving a remainder of 16.
Write down 9 as next digit of the result. 
Result so far: 159.0
Deduct 513 from 529 and we're left with 16.
Fetch the next digit (1) from the dividend, attach it to 16 and continue: 161 / 57

Let's proceed to step 5:
When dividing 161 by 57, we get 2 with a remainder of 47.
The next digit of our result is 2. 
Result so far: 1592.0
Deduct 114 from 161 and we're left with 47.
Grab the next digit (5) from the dividend, add it to 47, then carry on: 475 / 57

Moving on to step 6:
When dividing 475 by 57, we get 8 with a remainder of 19.
The number 8 becomes the next digit in our result. 
Result so far: 15928.0
Deduct 456 from 475 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 7:
When dividing 190 by 57, we get 3 with a remainder of 19.
Write down 3 as next digit of the result. 
Result so far: 15928.3
The remainder is 19 after subtracting 171 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 8:
57 goes into 190 3 times with a remainder of 19.
Write down 3 as next digit of the result. 
Result so far: 15928.33
Subtracting 171 from 190 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final outcome is 15928.33, with a leftover of 0.019.